20875069 has 2 divisors, whose sum is σ = 20875070. Its totient is φ = 20875068.

The previous prime is 20875061. The next prime is 20875093. The reversal of 20875069 is 96057802.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 19686969 + 1188100 = 4437^2 + 1090^2 .

It is a cyclic number.

It is not a de Polignac number, because 20875069 - 2³ = 20875061 is a prime.

It is a super-2 number, since 2×20875069² = 871537011509522, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (20875061) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10437534 + 10437535.

It is an arithmetic number, because the mean of its divisors is an integer number (10437535).

Almost surely, 2^20875069 is an apocalyptic number.

It is an amenable number.

20875069 is a deficient number, since it is larger than the sum of its proper divisors (1).

20875069 is an equidigital number, since it uses as much as digits as its factorization.

20875069 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 30240, while the sum is 37.

The square root of 20875069 is about 4568.9242716421. The cubic root of 20875069 is about 275.3442256920.

The spelling of 20875069 in words is "twenty million, eight hundred seventy-five thousand, sixty-nine".